adding initial spec, with one test.

.travis.yml

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+language: objective-c
+
+notifications:
+  email:
+    on_success: never
+    on_failure: change
+
+script: 'curl -s https://raw.githubusercontent.com/atom/ci/master/build-package.sh | sh'

spec/fixtures/sample.coffee

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+addition = (a,b) ->
+  a+b

spec/sublime-tabs-spec.coffee

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+{$, WorkspaceView, View}  = require 'atom'
+_                         = require 'underscore-plus'
+path                      = require 'path'
+SublimeTabBarView         = require '../lib/sublime-tab-bar-view'
+SublimeTabView            = require '../lib/sublime-tab-view'
+
+describe "Sublime Tabs Package", ->
+  beforeEach: ->
+    atom.workspaceView = new WorkspaceView
+
+    waitsForPromise ->
+      atom.workspace.open('sample.coffee')
+
+    waitsForPromise ->
+      atom.packages.activatePackage('sublime-tabs')
+
+describe 'SublimeTabBarView', ->
+  [item1, item2, editor1, pane, tabBar] = []
+
+  class TestView extends View
+    @deserialize: ({title, longTitle, iconName}) -> new TestView(title, longTitle, iconName)
+    @content: (title) -> @div title
+    initialize: (@title, @longTitle, @iconName) ->
+    getTitle: -> @title
+    getLongTitle: -> @longTitle
+    getIconName: -> @iconName
+    serialize: -> { deserializer: 'TestView', @title, @longTitle, @iconName }
+
+  beforeEach ->
+    atom.workspaceView = new WorkspaceView
+    atom.workspace = atom.workspaceView.model
+    atom.deserializers.add(TestView)
+    item1 = new TestView('Item 1', undefined, 'squirrel')
+    item2 = new TestView('Item 2')
+
+    waitsForPromise ->
+      atom.workspace.open('sample.coffee')
+
+    runs ->
+      editor1 = atom.workspace.getActiveEditor()
+      pane = atom.workspaceView.getActivePaneView()
+      pane.addItem(item1, 0)
+      pane.addItem(item2, 2)
+      pane.activateItem(item2)
+      tabBar = new SublimeTabBarView(pane)
+
+  afterEach ->
+    atom.deserializers.remove(TestView)
+
+  describe 'Temporary Tabs', ->
+    it 'adds a temp class when opening a file', ->
+      editor2 = null
+
+      waitsForPromise ->
+        atom.project.open('sample.txt').then (o) -> editor2 = o
+
+      runs ->
+        pane.activateItem(editor2)
+        expect(tabBar.tabForItem(editor2)).toHaveClass 'temp'